Hairbrush



FIG. 1 is a top view of a hairbrush;

FIG. 2 is a bottom view of the hairbrush of FIG. 1;

FIG. 3 is perspective view of the hairbrush of FIG. 1; and,

FIG. 4 is side view of the hairbrush of FIG. 1, the opposite side being identical.

The broken line showing of exemplary bristles throughout the drawing figures is for illustrative purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for a hairbrush, as shown and described. 